Joe Rogan Says Conor McGregor Will “F*ck Up” Floyd Mayweather Boxing MMA Posted by Rowan Meegan May 9th 2016, 9:54 Follow @rowanmeegan UFC commentator and expert Joe Rogan has said Conor McGregor will “f*ck up” Floyd Mayweather if they fight in an MMA fight but he equally believes Mayweather will “f*ck up” McGregor should they go toe-to-toe in a boxing match. More Stories Conor McGregor Floyd Mayweather Joe Rogan